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#include <stdio.h>
#include <stdlib.h>
#include "sha512_mb.h"

#define TEST_LEN  (1024 * 1024)
#define TEST_BUFS 100
#ifndef RANDOMS
#define RANDOMS 10
#endif
#ifndef TEST_SEED
#define TEST_SEED 0x1234
#endif

#define UPDATE_SIZE            13 * ISAL_SHA512_BLOCK_SIZE
#define MAX_RAND_UPDATE_BLOCKS (TEST_LEN / (16 * ISAL_SHA512_BLOCK_SIZE))

#ifdef DEBUG
#define debug_char(x) putchar(x)
#else
#define debug_char(x)                                                                              \
        do {                                                                                       \
        } while (0)
#endif

/* Reference digest global to reduce stack usage */
static uint64_t digest_ref[TEST_BUFS][ISAL_SHA512_DIGEST_NWORDS];

extern void
sha512_ref(uint8_t *input_data, uint64_t *digest, uint32_t len);

// Generates pseudo-random data

void
rand_buffer(unsigned char *buf, const long buffer_size)
{
        long i;
        for (i = 0; i < buffer_size; i++)
                buf[i] = rand();
}

int
main(void)
{
        ISAL_SHA512_HASH_CTX_MGR *mgr = NULL;
        ISAL_SHA512_HASH_CTX ctxpool[TEST_BUFS], *ctx = NULL;
        uint32_t i, j, fail = 0;
        uint32_t len_done, len_rem, len_rand;
        unsigned char *bufs[TEST_BUFS];
        unsigned char *buf_ptr[TEST_BUFS];
        uint32_t lens[TEST_BUFS];
        unsigned int joblen, jobs, t;
        int ret;

        printf("multibinary_sha512_update test, %d sets of %dx%d max: ", RANDOMS, TEST_BUFS,
               TEST_LEN);

        srand(TEST_SEED);

        ret = posix_memalign((void *) &mgr, 16, sizeof(ISAL_SHA512_HASH_CTX_MGR));
        if ((ret != 0) || (mgr == NULL)) {
                printf("posix_memalign failed test aborted\n");
                return 1;
        }

        ret = isal_sha512_ctx_mgr_init(mgr);
        if (ret)
                return 1;

        for (i = 0; i < TEST_BUFS; i++) {
                // Allocate and fill buffer
                bufs[i] = (unsigned char *) malloc(TEST_LEN);
                buf_ptr[i] = bufs[i];
                if (bufs[i] == NULL) {
                        printf("malloc failed test aborted\n");
                        fail++;
                        goto end;
                }
                rand_buffer(bufs[i], TEST_LEN);

                // Init ctx contents
                isal_hash_ctx_init(&ctxpool[i]);
                ctxpool[i].user_data = (void *) ((uint64_t) i);

                // Run reference test
                sha512_ref(bufs[i], digest_ref[i], TEST_LEN);
        }

        // Run sb_sha512 tests
        for (i = 0; i < TEST_BUFS;) {
                len_done = (uint32_t) ((uintptr_t) buf_ptr[i] - (uintptr_t) bufs[i]);
                len_rem = TEST_LEN - len_done;

                if (len_done == 0)
                        ret = isal_sha512_ctx_mgr_submit(mgr, &ctxpool[i], &ctx, buf_ptr[i],
                                                         UPDATE_SIZE, ISAL_HASH_FIRST);
                else if (len_rem <= UPDATE_SIZE)
                        ret = isal_sha512_ctx_mgr_submit(mgr, &ctxpool[i], &ctx, buf_ptr[i],
                                                         len_rem, ISAL_HASH_LAST);
                else
                        ret = isal_sha512_ctx_mgr_submit(mgr, &ctxpool[i], &ctx, buf_ptr[i],
                                                         UPDATE_SIZE, ISAL_HASH_UPDATE);
                if (ret)
                        return 1;

                // Add jobs while available or finished
                if ((ctx == NULL) || isal_hash_ctx_complete(ctx)) {
                        i++;
                        continue;
                }
                // Resubmit unfinished job
                i = (unsigned long) (uintptr_t) (ctx->user_data);
                buf_ptr[i] += UPDATE_SIZE;
        }

        // Start flushing finished jobs, end on last flushed
        ret = isal_sha512_ctx_mgr_flush(mgr, &ctx);
        if (ret)
                return 1;
        while (ctx) {
                if (isal_hash_ctx_complete(ctx)) {
                        debug_char('-');
                        ret = isal_sha512_ctx_mgr_flush(mgr, &ctx);
                        if (ret)
                                return 1;
                        continue;
                }
                // Resubmit unfinished job
                i = (unsigned long) (uintptr_t) (ctx->user_data);
                buf_ptr[i] += UPDATE_SIZE;

                len_done = (int) ((uintptr_t) buf_ptr[i] - (uintptr_t) bufs[i]);
                len_rem = TEST_LEN - len_done;

                if (len_rem <= UPDATE_SIZE)
                        ret = isal_sha512_ctx_mgr_submit(mgr, &ctxpool[i], &ctx, buf_ptr[i],
                                                         len_rem, ISAL_HASH_LAST);
                else
                        ret = isal_sha512_ctx_mgr_submit(mgr, &ctxpool[i], &ctx, buf_ptr[i],
                                                         UPDATE_SIZE, ISAL_HASH_UPDATE);
                if (ret)
                        return 1;

                if (ctx == NULL) {
                        ret = isal_sha512_ctx_mgr_flush(mgr, &ctx);
                        if (ret)
                                return 1;
                }
        }

        // Check digests
        for (i = 0; i < TEST_BUFS; i++) {
                for (j = 0; j < ISAL_SHA512_DIGEST_NWORDS; j++) {
                        if (ctxpool[i].job.result_digest[j] != digest_ref[i][j]) {
                                fail++;
                                printf("Test%d fixed size, digest%d fail %8llX <=> %8llX", i, j,
                                       (unsigned long long) ctxpool[i].job.result_digest[j],
                                       (unsigned long long) digest_ref[i][j]);
                        }
                }
        }
        putchar('.');

        // Run tests with random size and number of jobs
        for (t = 0; t < RANDOMS; t++) {
                jobs = rand() % (TEST_BUFS);

                for (i = 0; i < jobs; i++) {
                        joblen = rand() % (TEST_LEN);
                        rand_buffer(bufs[i], joblen);
                        lens[i] = joblen;
                        buf_ptr[i] = bufs[i];
                        sha512_ref(bufs[i], digest_ref[i], lens[i]);
                }

                ret = isal_sha512_ctx_mgr_init(mgr);
                if (ret)
                        return 1;

                // Run sha512_sb jobs
                i = 0;
                while (i < jobs) {
                        // Submit a new job
                        len_rand = ISAL_SHA512_BLOCK_SIZE +
                                   ISAL_SHA512_BLOCK_SIZE * (rand() % MAX_RAND_UPDATE_BLOCKS);

                        if (lens[i] > len_rand)
                                ret = isal_sha512_ctx_mgr_submit(mgr, &ctxpool[i], &ctx, buf_ptr[i],
                                                                 len_rand, ISAL_HASH_FIRST);
                        else
                                ret = isal_sha512_ctx_mgr_submit(mgr, &ctxpool[i], &ctx, buf_ptr[i],
                                                                 lens[i], ISAL_HASH_ENTIRE);
                        if (ret)
                                return 1;

                        // Returned ctx could be:
                        //  - null context (we are just getting started and lanes aren't full yet),
                        //  or
                        //  - finished already (an ENTIRE we submitted or a previous LAST is
                        //  returned), or
                        //  - an unfinished ctx, we will resubmit

                        if ((ctx == NULL) || isal_hash_ctx_complete(ctx)) {
                                i++;
                                continue;
                        } else {
                                // unfinished ctx returned, choose another random update length and
                                // submit either UPDATE or LAST depending on the amount of buffer
                                // remaining
                                while ((ctx != NULL) && !(isal_hash_ctx_complete(ctx))) {
                                        j = (unsigned long) (uintptr_t) (ctx->user_data); // Get
                                                                                          // index
                                                                                          // of the
                                                                                          // returned
                                                                                          // ctx
                                        buf_ptr[j] = bufs[j] + ctx->total_length;
                                        len_rand = (rand() % ISAL_SHA512_BLOCK_SIZE) *
                                                   (rand() % MAX_RAND_UPDATE_BLOCKS);
                                        len_rem = lens[j] - (uint32_t) ctx->total_length;

                                        if (len_rem <=
                                            len_rand) // submit the rest of the job as LAST
                                                ret = isal_sha512_ctx_mgr_submit(
                                                        mgr, &ctxpool[j], &ctx, buf_ptr[j], len_rem,
                                                        ISAL_HASH_LAST);
                                        else // submit the random update length as UPDATE
                                                ret = isal_sha512_ctx_mgr_submit(
                                                        mgr, &ctxpool[j], &ctx, buf_ptr[j],
                                                        len_rand, ISAL_HASH_UPDATE);
                                        if (ret)
                                                return 1;
                                } // Either continue submitting any contexts returned here as
                                  // UPDATE/LAST, or
                                // go back to submitting new jobs using the index i.

                                i++;
                        }
                }

                // Start flushing finished jobs, end on last flushed
                ret = isal_sha512_ctx_mgr_flush(mgr, &ctx);
                if (ret)
                        return 1;
                while (ctx) {
                        if (isal_hash_ctx_complete(ctx)) {
                                debug_char('-');
                                ret = isal_sha512_ctx_mgr_flush(mgr, &ctx);
                                if (ret)
                                        return 1;
                                continue;
                        }
                        // Resubmit unfinished job
                        i = (unsigned long) (uintptr_t) (ctx->user_data);
                        buf_ptr[i] = bufs[i] + ctx->total_length; // update buffer pointer
                        len_rem = lens[i] - (uint32_t) ctx->total_length;
                        len_rand = (rand() % ISAL_SHA512_BLOCK_SIZE) *
                                   (rand() % MAX_RAND_UPDATE_BLOCKS);
                        debug_char('+');
                        if (len_rem <= len_rand)
                                ret = isal_sha512_ctx_mgr_submit(mgr, &ctxpool[i], &ctx, buf_ptr[i],
                                                                 len_rem, ISAL_HASH_LAST);
                        else
                                ret = isal_sha512_ctx_mgr_submit(mgr, &ctxpool[i], &ctx, buf_ptr[i],
                                                                 len_rand, ISAL_HASH_UPDATE);
                        if (ret)
                                return 1;

                        if (ctx == NULL) {
                                ret = isal_sha512_ctx_mgr_flush(mgr, &ctx);
                                if (ret)
                                        return 1;
                        }
                }

                // Check result digest
                for (i = 0; i < jobs; i++) {
                        for (j = 0; j < ISAL_SHA512_DIGEST_NWORDS; j++) {
                                if (ctxpool[i].job.result_digest[j] != digest_ref[i][j]) {
                                        fail++;
                                        printf("Test%d, digest%d fail %8llX <=> %8llX\n", i, j,
                                               (unsigned long long) ctxpool[i].job.result_digest[j],
                                               (unsigned long long) digest_ref[i][j]);
                                }
                        }
                }
                if (fail) {
                        printf("Test failed function check %d\n", fail);
                        goto end;
                }

                putchar('.');
                fflush(0);
        } // random test t

end:
        for (i = 0; i < TEST_BUFS; i++)
                free(bufs[i]);
        aligned_free(mgr);

        if (fail)
                printf("Test failed function check %d\n", fail);
        else
                printf(" multibinary_sha512_update rand: Pass\n");

        return fail;
}
